EP2664414B1 - Piece holder support for a machine tool or bench of a machine tool - Google Patents

Piece holder support for a machine tool or bench of a machine tool Download PDF

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Publication number
EP2664414B1
EP2664414B1 EP13165901.3A EP13165901A EP2664414B1 EP 2664414 B1 EP2664414 B1 EP 2664414B1 EP 13165901 A EP13165901 A EP 13165901A EP 2664414 B1 EP2664414 B1 EP 2664414B1
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EP
European Patent Office
Prior art keywords
support
bench
machine tool
piece
upper wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP13165901.3A
Other languages
German (de)
French (fr)
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EP2664414A1 (en
Inventor
Attilio Camozzi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Innse Berardi SpA
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Innse Berardi SpA
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Publication date
Application filed by Innse Berardi SpA filed Critical Innse Berardi SpA
Priority to PL13165901T priority Critical patent/PL2664414T3/en
Publication of EP2664414A1 publication Critical patent/EP2664414A1/en
Application granted granted Critical
Publication of EP2664414B1 publication Critical patent/EP2664414B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
    • B23Q1/015—Frames, beds, pillars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/03—Stationary work or tool supports
    • B23Q1/032—Stationary work or tool supports characterised by properties of the support surface

Definitions

  • the present invention relates to a piece holder support for a machine tool for performing mechanical processing, and in particular for a machine tool of large dimensions, for example of the "horizontal” type (such as a boring machine) or of the “vertical " type (such as a gantry milling machine).
  • a machine tool of large dimensions for example of the "horizontal” type (such as a boring machine) or of the “vertical " type (such as a gantry milling machine).
  • a piece-holder support for a machine tool or bench comprising at least one block comprising an upper wall suitable for resting the piece to be processed on or for supporting the base and a reinforcement structure comprising a plurality of cells alongside each other, peripherally delimited by septums which delimit empty compartments, wherein said septums project downwards from the upper wall, said septums and upper wall being made together in one piece by casting, and the block comprises an annular side wall, projecting from the upper wall, and at least one end wall, which closes the support or the bench on the bottom, connecting it to the side wall and the reinforcement structure connects the upper wall to the end wall and wherein the upper wall has a flat upper surface.
  • the piece holder support also needs to be particularly rigid, avoiding solutions which increase the production costs thereof excessively.
  • a boring machine 1 comprises a base 2, resting on a bench 3, in turn, resting on a ground plane T.
  • a vertical upright 4 extends along a main axis Y, substantially orthogonal to the ground plane T.
  • the base 2, and thus the upright placed on it, can be translated upon command along the bench 3, for positioning as needed.
  • the base 2 is suitable for supporting the upright in a stable manner, including in translation, avoiding tipping or oscillations.
  • the projection of the upright along the main axis Y on the base is contained inside said base.
  • the machine 1 comprises a mobile group 6 supported by the upright 4; the mobile group 6 comprises a carriage 8, sliding upon command along the upright 4, so as to position itself at a desired height along the main axis Y, and a head 9, supported by the carriage 8, translating along the head axis W orthogonal to the main axis Y, that is to say substantially horizontal.
  • the mobile group 6 comprises at least one mandrel 10, supported by the head 9, rotatable around a working axis Z, also substantially perpendicular to the main axis Y, and preferably also translatable along said working axis Z.
  • a longitudinal axis X Perpendicular to the main axis Y and to the working axis Z a longitudinal axis X is defined.
  • a piece to be machined Q is positioned opposite the mandrel 10, for example positioned on a piece-holder support 100, resting on the ground plane T, extending along a support direction J, for example parallel to the longitudinal axis X.
  • the machine 1 is a gantry milling machine.
  • the machine 1 comprises two uprights 4', 4", extending along a respective main axis R1, R2, resting on respective bases 2', 2" positioned on benches 3', 3" resting on a ground plane T.
  • the two uprights 4', 4" are distanced along a transversal axis Y and rigidly joined to each other by means of a fixed cross-member 20, for example composed of portions of cross-member 210 and at least one intermediate spacer 300 such as to connect said portions of cross-member.
  • the bases 2', 2" and thus the relative uprights 4', 4" are translatable upon command along the respective benches 3' 3" for positioning as needed.
  • the machine 1 comprises a mobile group 6, comprising a mobile cross-member 12 which extends along said transversal axis Y.
  • the cross-member 12 is engaged with the uprights 4', 4" and is translatable along the vertical axes R1,R2.
  • the mobile group 6 further comprises a carriage 14 sliding along the mobile cross-member 12, a head 16, supported by the carriage 14 and translatable along a head axis W, and a mandrel, supported by the head 16, rotatable around a working axis Z, substantially parallel to the vertical axes R1, R2 and preferably translatable along said working axis Z.
  • the piece to be worked is positioned in the span formed by the uprights 4', 4" and by the mobile cross-member 12 for example resting on the support 100, resting on the ground plane T, and extending along the support axis J, through the span of the machine.
  • the component composed of the base 2, 2', 2" of the upright 4, 4', 4" and, in the variation which provides for it, of the cross-member 210 is made in one piece preferably by casting , for example in cast iron.
  • the piece holder support 100 is made in a single piece, preferably by casting, for example in cast iron.
  • the piece-holder support 100 comprises an upper wall 102, having a flat upper surface 104, destined to support the piece to be worked Q, on which channels 106 are preferably made, parallel to each other and to the direction of support.
  • the piece-holder support 100 further comprises an annular side wall 108, projecting from the upper wall 102,and at least one end wall 110, which closes the support on the bottom, connecting it to the side wall 108.
  • a plurality of end walls 110 are provided, in the form of a band, separate from each other and distanced along the support direction.
  • the support 100 comprises a plurality of cells 112 peripherally delimited by septums 114 projecting from the upper wall 102, which form a honeycomb reinforcement structure.
  • said support comprises a plurality of septums 114, positioned and joined to each other so as to form polygonal cells, for example hexagonal, peripherally closed, which delimit empty inner compartments 116.
  • the honeycomb reinforcement structure is homogeneous, that is to say the cells are evenly distributed over said upper wall 108.
  • the reinforcement structure extends in height as far as the height of the side wall 108 and, at the end walls 110, connects the upper wall 102 to said end walls 110.
  • the piece-holder support 100 is fixed. In further embodiments, the piece-holder support is translatable and/or rotatable for correct positioning in relation to the machine tool.
  • the bench which supports the base in translatable manner is provided with the reinforcement structure described above.
  • the piece-holder support or bench is made in a single piece.
  • the piece-holder support or the bench is made from blocks joined to each other, for example mechanically each block comprising an upper wall and at least one septum projecting downwards from the upper wall, said block being made in one piece.
  • the piece-holder support according to the present invention makes it possible to satisfy the precision requirements of processing spoken of, inasmuch as particularly rigid.
  • the piece-holder support according to the invention has reduced production costs and times compared to analogous components of the prior art, made by mechanical tool processing.
  • the support according to the invention has a lower weight than the analogous components of the prior art.
  • the support according to the invention has a lower cost for the raw material compared to that of analogous components of the prior art.
  • the reinforcement structure provides for a plurality of cells in the shape of an irregular polygon or polygon with some arched sides or having a circumferential shape.
  • the distribution of the cells is not homogeneous, but is for example denser in the zones subject to greater working loads.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machine Tool Units (AREA)
  • Jigs For Machine Tools (AREA)

Description

  • The present invention relates to a piece holder support for a machine tool for performing mechanical processing, and in particular for a machine tool of large dimensions, for example of the "horizontal" type (such as a boring machine) or of the "vertical " type (such as a gantry milling machine).
  • In the machine tool sector, and in particular in that of machine tools of large dimensions, the need is particularly felt to perform mechanical processing with very strict tolerances, despite the dimensions and the elevated weight of the pieces being processed, often combined with an asymmetric distribution, and the considerable forces at play. Often, in fact, such processing regards mechanical parts for the nuclear industry (reservoirs, heat exchangers) or for the engine industry (foundations of marine engines). Document EP 148 8887 A1 discloses a bed of a machine tool with a structure to reduce the strain of the bed.
  • From EP 148 8887 A1 there is known a piece-holder support for a machine tool or bench, comprising at least one block comprising an upper wall suitable for resting the piece to be processed on or for supporting the base and a reinforcement structure comprising a plurality of cells alongside each other, peripherally delimited by septums which delimit empty compartments, wherein said septums project downwards from the upper wall, said septums and upper wall being made together in one piece by casting, and the block comprises an annular side wall, projecting from the upper wall, and at least one end wall, which closes the support or the bench on the bottom, connecting it to the side wall and the reinforcement structure connects the upper wall to the end wall and wherein the upper wall has a flat upper surface.
  • To ensure such strict machine tolerances, the piece holder support also needs to be particularly rigid, avoiding solutions which increase the production costs thereof excessively.
  • Such purpose is achieved by a piece holder support for a machine tool made according to claim 1.
  • The characteristics and advantages of the piece-holder support according to the present invention will be evident from the description given below, made by way of a non-limiting example, according to the appended drawings, wherein:
    • - figure 1 shows a machine tool, and in particular a boring machine, associated with a piece holder support according to the present invention;
    • - figure 2 shows a further machine tool, and in particular a gantry milling machine, associated with the piece holder support according to the present invention;
    • - figure 3 shows the piece-holder support seen in a plan view from above;
    • - figure 4 shows the piece-holder support in figure 3, in a front view;
    • - figure 5 shows the piece-holder support in figure 3, in a plan view from below;
    • - figure 6 shows the piece-holder support in figure 3, in a side view;
    • - figure 7 shows the piece-holder support in figure 3 in a cross-section view, taken according to the plane cross-section VII-VII in figure 3;
    • - figure 8 shows the piece-holder support in figure 3 in a cross-section view, taken according to the plane cross-section VIII-VIII in figure 3; and
    • - figure 9 shows the piece-holder support in figure 3 in a cross-section view, taken according to the plane cross-section IX-IX in figure 4.
  • A boring machine 1 comprises a base 2, resting on a bench 3, in turn, resting on a ground plane T.
  • Above the base 2 a vertical upright 4 extends along a main axis Y, substantially orthogonal to the ground plane T.
  • The base 2, and thus the upright placed on it, can be translated upon command along the bench 3, for positioning as needed.
  • The base 2 is suitable for supporting the upright in a stable manner, including in translation, avoiding tipping or oscillations. Preferably, the projection of the upright along the main axis Y on the base is contained inside said base.
  • The machine 1 comprises a mobile group 6 supported by the upright 4; the mobile group 6 comprises a carriage 8, sliding upon command along the upright 4, so as to position itself at a desired height along the main axis Y, and a head 9, supported by the carriage 8, translating along the head axis W orthogonal to the main axis Y, that is to say substantially horizontal.
  • In addition, the mobile group 6 comprises at least one mandrel 10, supported by the head 9, rotatable around a working axis Z, also substantially perpendicular to the main axis Y, and preferably also translatable along said working axis Z.
  • Perpendicular to the main axis Y and to the working axis Z a longitudinal axis X is defined.
  • A piece to be machined Q is positioned opposite the mandrel 10, for example positioned on a piece-holder support 100, resting on the ground plane T, extending along a support direction J, for example parallel to the longitudinal axis X.
  • According to a further embodiment, the machine 1 is a gantry milling machine.
  • According to such variation, the machine 1 comprises two uprights 4', 4", extending along a respective main axis R1, R2, resting on respective bases 2', 2" positioned on benches 3', 3" resting on a ground plane T.
  • The two uprights 4', 4" are distanced along a transversal axis Y and rigidly joined to each other by means of a fixed cross-member 20, for example composed of portions of cross-member 210 and at least one intermediate spacer 300 such as to connect said portions of cross-member.
  • The bases 2', 2" and thus the relative uprights 4', 4" are translatable upon command along the respective benches 3' 3" for positioning as needed.
  • In addition, the machine 1 comprises a mobile group 6, comprising a mobile cross-member 12 which extends along said transversal axis Y.
  • At its ends, the cross-member 12 is engaged with the uprights 4', 4" and is translatable along the vertical axes R1,R2.
  • The mobile group 6 further comprises a carriage 14 sliding along the mobile cross-member 12, a head 16, supported by the carriage 14 and translatable along a head axis W, and a mandrel, supported by the head 16, rotatable around a working axis Z, substantially parallel to the vertical axes R1, R2 and preferably translatable along said working axis Z.
  • The piece to be worked is positioned in the span formed by the uprights 4', 4" and by the mobile cross-member 12 for example resting on the support 100, resting on the ground plane T, and extending along the support axis J, through the span of the machine.
  • Preferably, the component composed of the base 2, 2', 2" of the upright 4, 4', 4" and, in the variation which provides for it, of the cross-member 210, is made in one piece preferably by casting , for example in cast iron.
  • The piece holder support 100 is made in a single piece, preferably by casting, for example in cast iron.
  • The piece-holder support 100 comprises an upper wall 102, having a flat upper surface 104, destined to support the piece to be worked Q, on which channels 106 are preferably made, parallel to each other and to the direction of support.
  • The piece-holder support 100 further comprises an annular side wall 108, projecting from the upper wall 102,and at least one end wall 110, which closes the support on the bottom, connecting it to the side wall 108.
  • Preferably, a plurality of end walls 110 are provided, in the form of a band, separate from each other and distanced along the support direction.
  • Internally, the support 100 comprises a plurality of cells 112 peripherally delimited by septums 114 projecting from the upper wall 102, which form a honeycomb reinforcement structure.
  • In particular, said support comprises a plurality of septums 114, positioned and joined to each other so as to form polygonal cells, for example hexagonal, peripherally closed, which delimit empty inner compartments 116.
  • Preferably, the honeycomb reinforcement structure is homogeneous, that is to say the cells are evenly distributed over said upper wall 108.
  • Preferably, in addition, the reinforcement structure extends in height as far as the height of the side wall 108 and, at the end walls 110, connects the upper wall 102 to said end walls 110.
  • In the embodiments illustrated, the piece-holder support 100 is fixed. In further embodiments, the piece-holder support is translatable and/or rotatable for correct positioning in relation to the machine tool.
  • In addition, in yet further embodiments, the bench which supports the base in translatable manner is provided with the reinforcement structure described above.
  • In addition, in the embodiments illustrated, the piece-holder support or bench is made in a single piece. In further embodiments, the piece-holder support or the bench is made from blocks joined to each other, for example mechanically each block comprising an upper wall and at least one septum projecting downwards from the upper wall, said block being made in one piece.
  • Innovatively, the piece-holder support according to the present invention makes it possible to satisfy the precision requirements of processing spoken of, inasmuch as particularly rigid.
  • Advantageously, in addition, the piece-holder support according to the invention has reduced production costs and times compared to analogous components of the prior art, made by mechanical tool processing.
  • Advantageously, in addition, the support according to the invention has a lower weight than the analogous components of the prior art.
  • According to a further advantageous aspect, the support according to the invention has a lower cost for the raw material compared to that of analogous components of the prior art.
  • It is clear that a person skilled in the art may make modifications to the support component described above so as to satisfy contingent requirements.
  • For example, according to an embodiment variation, the reinforcement structure provides for a plurality of cells in the shape of an irregular polygon or polygon with some arched sides or having a circumferential shape.
  • According to a further embodiment, the distribution of the cells is not homogeneous, but is for example denser in the zones subject to greater working loads.
  • Such variants are also contained within the sphere of protection as defined by the following claims.

Claims (11)

  1. Piece-holder support (100) for a machine tool (1) of large dimensions suitable for supporting a piece for mechanical processing, or bench (3) of a machine tool of large dimensions suitable for supporting a base (2) bearing an upright (4), comprising
    at least one block comprising an upper wall (102) suitable for resting the piece to be processed on or for supporting the base (2:)
    and a reinforcement structure comprising a plurality of cells (112) alongside:each other, peripherally delimited by septums (114) which delimit empty compartments (116), wherein said septums (114) project downwards from the upper wall,
    said septums and upper wall being made together in one piece by casting, and
    the block comprises an annular side wall (108), projecting from the upper wall (102), and at least one end wall (110), which closes the support or the bench on the bottom, connecting it to the side wall (108) and
    the reinforcement structure connects the upper wall (102) to the end wall (110),
    and wherein the upper wall (102) has a flat upper surface (104), on which channels (106) are made, parallel to each other and to a direction of support.
  2. Support or bench according to claim 1, wherein the block is made in cast iron.
  3. Support or bench according to claim 1 or 2, wherein the reinforcement structure is a honeycomb shape.
  4. Support or bench according to claims 1 to 3, wherein the cells are evenly distributed all over the support or the bench.
  5. Support or bench according to any of the previous claims, comprising a plurality of said blocks, joined mechanically to each other.
  6. Support or bench according to claims 1 to 4, composed of a single block.
  7. Support or bench according to any of the previous claims, suitable for being attached to the machine tool.
  8. Support or bench according to claims 1 to 6, suitable for being translated and/or rotated in relation to the machine tool.
  9. Processing apparatus comprising:
    - a machine tool (1);
    - a piece holder support (100) made according to any of the previous claims.
  10. Processing apparatus comprising a machine tool (1) comprising:
    - a bench (3) made according to claims 1 to 8;
    - a base (3) and an upright (4) supported by the base (3), supported by the bench (3), said base being translatable on command.
  11. Production method of a piece holder support for a machine tool or a bench of a machine tool according to claims 1 to 8, comprising the step of casting a molten metal and obtaining a portion of said support or said bench, in a single piece.
EP13165901.3A 2012-05-15 2013-04-30 Piece holder support for a machine tool or bench of a machine tool Active EP2664414B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13165901T PL2664414T3 (en) 2012-05-15 2013-04-30 Piece holder support for a machine tool or bench of a machine tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000083A ITBS20120083A1 (en) 2012-05-15 2012-05-15 HOLDER HOLDER FOR A MACHINE TOOL OR BENCH OF THE MACHINE

Publications (2)

Publication Number Publication Date
EP2664414A1 EP2664414A1 (en) 2013-11-20
EP2664414B1 true EP2664414B1 (en) 2016-11-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP13165901.3A Active EP2664414B1 (en) 2012-05-15 2013-04-30 Piece holder support for a machine tool or bench of a machine tool

Country Status (3)

Country Link
EP (1) EP2664414B1 (en)
IT (1) ITBS20120083A1 (en)
PL (1) PL2664414T3 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2231080A (en) * 1939-07-31 1941-02-11 Northfield Foundry And Machine Band saw table
BE585683A (en) * 1959-12-15 1960-04-01 Heuze Atel Table subject to heating.
US4816847A (en) * 1988-02-08 1989-03-28 The Gerber Scientific Instrument Company High resonance drive table and method of making a planar work surface
US7503244B2 (en) * 2003-06-17 2009-03-17 Jtekt Corporation Machine tool and bed thereof

Also Published As

Publication number Publication date
EP2664414A1 (en) 2013-11-20
PL2664414T3 (en) 2017-05-31
ITBS20120083A1 (en) 2013-11-16

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